"use strict";

// import fs for reading
var fs = require ('fs');

// import the generated Parser
var parser = require ('./alf.js').parser;

var str = fs.readFileSync (process.argv[2], 'UTF-8');




function writeThreeAddressCode (node)


{
    function nextVariable ()
    {
        if(node.op == '*')
        {
        return 'mull';
        }
         else return 'add';
    }


    if (node.type === 'script')
    {
        for (var statementIndex in node.statements)
        {
            writeThreeAddressCode(node.statements[statementIndex]);
        }
    }
    else
    if (node.type === 'expr')
    {
        if (node.left !== undefined && node.right !== undefined)
        {
            writeThreeAddressCode (node.left);
            writeThreeAddressCode (node.right);
            // node.left is the result of node.left
            // node.right is the result of node.right
            // write the three address code here

            var t = nextVariable();
            console.log(t);
            //node.result = t;
        }
    }
    else
    if (node.type === 'number')
    {
        // the result for a number is the number itself
        console.log ('push '+node.value);
    }
    else
    if (node.type === 'id')
    {
       console.log ('push '+node.value);

    }
    else
    if (node.type === 'function_run')
    {

    }

    else


    if (node.type === 'function')
    {

    }
}

var ast = parser.parse (str);
console.log (JSON.stringify(ast, null, 4));

writeThreeAddressCode(ast);